EP3554924B1 - Heckstruktur eines kraftfahrzeugs mit einer verstärkung für heckkollisionen - Google Patents

Heckstruktur eines kraftfahrzeugs mit einer verstärkung für heckkollisionen Download PDF

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Publication number
EP3554924B1
EP3554924B1 EP17808971.0A EP17808971A EP3554924B1 EP 3554924 B1 EP3554924 B1 EP 3554924B1 EP 17808971 A EP17808971 A EP 17808971A EP 3554924 B1 EP3554924 B1 EP 3554924B1
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EP
European Patent Office
Prior art keywords
reinforcements
floor
profile
extending
reinforcement
Prior art date
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Application number
EP17808971.0A
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English (en)
French (fr)
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EP3554924A1 (de
Inventor
Marc Peru
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PSA Automobiles SA
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PSA Automobiles SA
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
    • B62D21/15—Understructures, i.e. chassis frame on which a vehicle body may be mounted having impact absorbing means, e.g. a frame designed to permanently or temporarily change shape or dimension upon impact with another body
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
    • B62D21/11—Understructures, i.e. chassis frame on which a vehicle body may be mounted with resilient means for suspension, e.g. of wheels or engine; sub-frames for mounting engine or suspensions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
    • B62D21/15—Understructures, i.e. chassis frame on which a vehicle body may be mounted having impact absorbing means, e.g. a frame designed to permanently or temporarily change shape or dimension upon impact with another body
    • B62D21/152—Front or rear frames
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/08—Front or rear portions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/20—Floors or bottom sub-units
    • B62D25/2009—Floors or bottom sub-units in connection with other superstructure subunits
    • B62D25/2027—Floors or bottom sub-units in connection with other superstructure subunits the subunits being rear structures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R7/00—Stowing or holding appliances inside vehicle primarily intended for personal property smaller than suit-cases, e.g. travelling articles, or maps
    • B60R7/04—Stowing or holding appliances inside vehicle primarily intended for personal property smaller than suit-cases, e.g. travelling articles, or maps in driver or passenger space, e.g. using racks

Definitions

  • the invention relates to the field of motor vehicles, more particularly to the rear structure of motor vehicles.
  • the figure 1 is a side and interior view of a rear structure of a motor vehicle 1 according to the prior art.
  • This structure comprises a floor 9 which forms a projection 9B relative to a front zone 9C of said floor 9.
  • Two rear structural sections 7 commonly called side members extend longitudinally and rearwardly from the projection of the floor 9B and are positioned at inside rear wheels 3.
  • New staggered rear impact protocols involving collisions on 70% of the rear of the vehicle are being implemented.
  • This type of impact shows a tendency of the rear structural section 7 to become vertical (shown schematically by the broken lines), causing the appearance of two ball joints 11.
  • These ball joints 11 correspond to fractures of the rear structural section 7, they lead to a reduction in the absorption of shocks by said section 7.
  • the published patent document US 2007/0132223 A1 discloses two shock absorbing devices which are positioned after the two side members, themselves positioned laterally to the floor. This document also describes an additional shock absorber device called a "crash box" which is found between the first shock absorber device and the side members.
  • a crash box which is found between the first shock absorber device and the side members.
  • FR2914616 discloses ( Figures in brackets refer to this document) a rear structure of a motor vehicle ( Fig. 1 ), said structure comprising: - a floor ( Fig. 1 pos. 5,2,6) with a rear zone (idem.) intended to receive a rear bench, said zone being raised by forming a projection ( Fig. 3 ) in relation to a zone of said floor adjacent to the front; - two rear structural profiles ( Fig. 1 pos. 3,12) extending longitudinally rearward under the rear area of the floor from the step ( Fig. 1 , 4 ).
  • the object of the invention is to remedy at least one of the drawbacks of the above-mentioned state of the art. More particularly, the invention aims to make the rear structure of a motor vehicle more capable of absorbing a rear impact, in particular the rear impact offset with 70% overlap, and to limit the verticalization of the rear structural section.
  • the invention relates to a rear structure of a motor vehicle, said structure comprising: a floor with a rear zone intended to receive a rear seat, said zone being raised by forming a projection with respect to a zone of said floor adjacent to the 'before; two rear structural channels extending longitudinally rearward under the rear area of the floor from the step; remarkable in that the structure further comprises: two reinforcements on the two structural sections, respectively; each of said reinforcements being fixed to the corresponding section and to the floor, at the level of the projection, and configured so as to limit a tendency of said section to pivot vertically upwards in the event of an impact at the rear.
  • the step is a portion of the floor oriented generally vertically and commonly referred to as a “heel floor”.
  • each of the reinforcements comprises a rear portion extending longitudinally under the corresponding profile and a front portion extending under the adjacent zone of the floor.
  • the front portion comprises tabs extending longitudinally from the rear portion; said tabs each comprising at least one fixing eyelet, in particular by screw.
  • At least one of the legs of each of the reinforcements is fixed to a longitudinal section extending under the floor.
  • the rear portion extends vertically along a lateral face of the corresponding profile and is fixed to said face.
  • each of the reinforcements comprises an intermediate portion, located between the rear and front portions, extending vertically along the projection so as to be able to bear on said projection in the event of vertical pivoting of the corresponding section. upon shock to the rear.
  • This intermediate portion can be consolidated by additional tubular reinforcements.
  • the rear portion comprises at an outer lateral edge, in a rear position, at least one eyelet for fixing by screws to a lateral structural spar of the floor.
  • the rear portion comprises vertical walls forming cavities in contact with the corresponding profile and capable of deforming in compression during vertical pivoting of said profile during the impact at the rear.
  • the vertical walls preferably have a thickness of between 1 and 3mm.
  • each of the reinforcements comprises a metallic tubular structure extending over the front and rear portions; the deformable cavities, where appropriate, being attached to said structure.
  • This metallic tubular structure can be used to fix the reinforcement on the rear structure of the vehicle, in particular on the lateral structural member, on the longitudinal profile and the rear structural profile.
  • the deformable cavities are preferably made of composite material, such as BMC (acronym for “Bulk Molding Compound”), and / or of SMC material (acronym for “Sheet Molding Compound”).
  • the tubular structure is preferably made of steel, and with a diameter of between 30 and 45 mm, with a thickness of between 2 and 3.5 mm.
  • each of the reinforcements is a metal foundry part forming the front portions; back ; intermediary, if applicable; and deformable cavities, if applicable.
  • the metal part can be made of aluminum. It can also present additional reinforcements in particular on the outer and inner side edges of the rear portion.
  • the thickness of the vertical walls is preferably between 2 and 4 mm, and the thickness of the rear portion is between 4 and 6 mm.
  • the measures of the invention are advantageous in that they allow the rear structure of a vehicle to be reinforced without a substantial increase in weight. Finally, it prevents verticalization of the rear structural profiles.
  • FIG. 2 to 6 are shown a rear structure of a motor vehicle 101 according to a first embodiment of the invention.
  • This structure 101 comprises a floor 109, itself formed by a rear zone 109A and a front zone 109C, the rear zone 109A being raised relative to the front zone 109C and forming a projection 109B with respect to said front zone 109C.
  • This structure 101 also includes a lateral structural spar 105, commonly referred to as a sill, extending laterally from the floor 109 of the vehicle, and a rear structural section 107, commonly referred to as a spar, extending longitudinally and rearwardly. from the step of the floor 109B.
  • a reinforcement 115 is fixed to the rear structural section 107 and to the floor 109. This reinforcement 115 is divided into three portions: a front portion 117, a rear portion 119 and an intermediate portion 121.
  • the rear portion 119 of the reinforcement 115 s' extends longitudinally from the floor step 109B rearward.
  • it comprises vertical walls forming cavities 119A providing a function of absorbing deformation in compression, of the “crashbox” type.
  • the cavities 119A are supported by a metallic tubular structure of the reinforcement, itself fixed to the rear structure of the vehicle 101.
  • An outer side edge 119B is positioned along the side structural spar 105, and an inner side edge 119C is positioned along. and at a distance from the rear structural section 107.
  • the tubular structure forms the intermediate portion 121 which extends to the front of the rear portion 119 of the reinforcement 115 and vertically along the projection 109B.
  • the tubular structure forms the front portion 117 of the reinforcement 115.
  • the figures 7 to 9 also describe a rear structure of a motor vehicle 201 with a reinforcement 215 according to a second embodiment of the invention. These figures show the numbering of the figures 2 to 6 for identical or similar elements, the numbering being however incremented by 100. Reference is also made to the description of these elements in relation to the first embodiment. Specific numbers between 200 and 300 are used for items specific to this embodiment.
  • This reinforcement 215 has most of the characteristics of the reinforcement 115 described in the first embodiment.
  • a rear portion 219 has the same arrangement as the rear portion 119 of the reinforcement 115, it extends forward by an intermediate portion 221, which extends vertically to rest on a projection 209B of the floor 209.
  • This intermediate portion 221 is reinforced by additional tubular reinforcements.
  • the reinforcement 215 in this case is designed in one piece. Another feature of this reinforcement 215 is that it is preferably made from metallic materials.
  • the rear portion 219 according to the second embodiment of the invention may also have additional reinforcements, in particular on the outer side edges 219B and inner side 219C.
  • the two embodiments of the reinforcements can be coupled together, or mounted separately.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Body Structure For Vehicles (AREA)

Claims (10)

  1. Hintere Struktur eines Kraftfahrzeugs (101; 201) umfasst:
    - einem Fußboden (109; 209) mit einem hinteren Bereich (109A; 209A) zur Aufnahme einer Rückbank, wobei der Bereich unter Bildung eines Vorsprungs (109B; 209B) relativ zu einem Bereich des Bodens (109; 209) nach vorn;
    - zwei hintere Strukturprofile (107; 207), die sich in Längsrichtung nach hinten unter dem hinteren Bereich des Bodens (109A; 209A) vom Sprung (109B; 209B);
    dadurch gekennzeichnet, dass die Struktur (101; 201. umfasst ferner
    - zwei Verstärkung (115; 215) an beiden Strukturprofilen (107; 207. jede der Verstärkungen (115; 215) am Profil (107; 207) entsprechend dem Boden (109; 209) an der Schwelle (109B; 209B) und so konfiguriert, dass eine Neigung des Profils (107; 207) bei einem Aufprall nach hinten vertikal nach oben zu schwenken.
  2. Hintere Struktur (101; 201) nach Anspruch 1, dadurch gekennzeichnet, dass jede der Verstärkungen (115; 215) einen hinteren Teil (119; 219) sich in Längsrichtung unter dem Profil (107; 207) und einen vorderen Teil (117; 217), die sich unter dem benachbarten Bereich des Bodens (109; (209).
  3. Hintere Struktur (101; 201) nach Anspruch 2, dadurch gekennzeichnet, dass für jede der Verstärkungen (115; 215) der vordere Teil (117; 217) mit Laschen, die sich in Längsrichtung vom hinteren Teil (119) erstrecken; 219. die Laschen (117A; 217A) mit jeweils mindestens einer Befestigungsöse (117B; 217B) pro Schraube.
  4. Hintere Struktur (101; 201) nach Anspruch 3, dadurch gekennzeichnet, dass mindestens eine der Laschen (117A; 217A) jeder Verstärkung (115; 215) an einem Längsprofil (113; 213) sich unter dem Boden (109; (209).
  5. Hintere Struktur (101; 201) nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, dass für jede der Verstärkungen (115; 215) der hintere Teil (119; 219) sich vertikal entlang einer Seitenfläche des Profils (107; 207) entspricht und an dieser Seite befestigt ist.
  6. Hintere Struktur (101; 201) nach einem der Ansprüche 2 bis 5, dadurch gekennzeichnet, dass jede der Verstärkungen (115; 215) einen Zwischenabschnitt (121; 221) zwischen den hinteren Abschnitten (119; 219) und davor (117; 217), die sich vertikal entlang der Erhebung (109B; 209B) derart, dass er auf der Erhebung (109B; 209B) bei vertikaler Verschwenkung des Profils (107; 207) entsprechend beim Heckaufprall.
  7. Hintere Struktur (101; 201) nach einem der Ansprüche 2 bis 6, dadurch gekennzeichnet, dass für jede der Verstärkungen (115; 215) der hintere Teil (119; 219) an einer äußeren Seitenkante (119B; 219B) in einer Rückstellung mindestens eine Befestigungsöse (117B; 217B) durch Schrauben an einem seitlichen Strukturholm (105; 205) des Bodens (109; (209).
  8. Hintere Struktur (101; 201) nach einem der Ansprüche 2 bis 7, dadurch gekennzeichnet, dass für jede der Verstärkungen (115; 215) der hintere Teil (119; 219) mit vertikalen Wänden, die Vertiefungen (119A; 219A) in Kontakt mit dem Profil (107; 207) entsprechend und geeignet, sich bei der vertikalen Schwenkbewegung des Profils (107) unter Druck zu verformen; 207) beim Heckaufprall.
  9. Hintere Struktur (101) nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass jede der Verstärkungen (115) eine rohrförmige Metallstruktur aufweist, die sich über die vorderen (117) und hinteren (119) Abschnitte erstreckt; die verformbaren Hohlräume (119A), sofern vorhanden, auf der Struktur angebracht sind.
  10. Hinterer Aufbau (201) nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass jede der Verstärkungen (215) ein metallisches Gussstück ist, das die vorderen Abschnitte (217) bildet; hinten (219); gegebenenfalls Zwischenhändler (221); und gegebenenfalls verformbare Hohlräume (219A).
EP17808971.0A 2016-12-16 2017-11-13 Heckstruktur eines kraftfahrzeugs mit einer verstärkung für heckkollisionen Active EP3554924B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1662688A FR3060507B1 (fr) 2016-12-16 2016-12-16 Structure arriere de vehicule automobile comprenant un renfort pour les collisions a l'arriere
PCT/FR2017/053097 WO2018109293A1 (fr) 2016-12-16 2017-11-13 Structure arriere de vehicule automobile comprenant un renfort pour les collisions a l'arriere

Publications (2)

Publication Number Publication Date
EP3554924A1 EP3554924A1 (de) 2019-10-23
EP3554924B1 true EP3554924B1 (de) 2021-02-24

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP17808971.0A Active EP3554924B1 (de) 2016-12-16 2017-11-13 Heckstruktur eines kraftfahrzeugs mit einer verstärkung für heckkollisionen

Country Status (5)

Country Link
US (1) US10737727B2 (de)
EP (1) EP3554924B1 (de)
CN (1) CN110087975B (de)
FR (1) FR3060507B1 (de)
WO (1) WO2018109293A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3101600B1 (fr) * 2019-10-04 2021-08-27 Psa Automobiles Sa Absorbeur de choc latéral pour véhicule automobile

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Publication number Priority date Publication date Assignee Title
GB2306922B (en) * 1994-08-31 1997-11-12 Fuji Heavy Ind Ltd Vehicle body structure
DE19703951C2 (de) * 1996-02-22 2000-05-18 Daihatsu Motor Co Ltd Vorderteilkonstruktion einer Fahrzeugkarosserie
DE10321573B4 (de) 2003-05-14 2008-09-25 Daimler Ag Crashstruktur für eine Kraftwagen-Rohbaustruktur
JP4195839B2 (ja) 2003-06-30 2008-12-17 タカタ株式会社 エアバッグカバー、エアバッグモジュール
US7213873B2 (en) 2004-03-25 2007-05-08 Mazda Motor Corporation Vehicle front-part structure
US7364225B2 (en) * 2005-12-15 2008-04-29 Mazda Motor Corporation Vehicle body structure
FR2914616B1 (fr) * 2007-04-04 2009-05-29 Renault Sas Soubassement de vehicule automobile
JP5417878B2 (ja) * 2008-05-09 2014-02-19 日産自動車株式会社 自動車車体の後部構造
DE102010019992A1 (de) * 2010-05-10 2011-11-10 Volkswagen Ag Karosseriestruktur, insbesondere Bodenstruktur, für ein Kraftfahrzeug
JP5375886B2 (ja) * 2011-07-26 2013-12-25 トヨタ自動車株式会社 自動車の電池保護構造
JP6016075B2 (ja) * 2012-06-06 2016-10-26 スズキ株式会社 車体中央部のフロア構造
WO2014034309A1 (ja) * 2012-08-31 2014-03-06 本田技研工業株式会社 車体後部構造
DE102013114311A1 (de) * 2013-12-18 2015-06-18 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Kraftfahrzeugheck

Non-Patent Citations (1)

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Title
None *

Also Published As

Publication number Publication date
EP3554924A1 (de) 2019-10-23
CN110087975B (zh) 2022-05-17
US10737727B2 (en) 2020-08-11
CN110087975A (zh) 2019-08-02
US20190337569A1 (en) 2019-11-07
FR3060507A1 (fr) 2018-06-22
WO2018109293A1 (fr) 2018-06-21
FR3060507B1 (fr) 2019-01-25

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